jerry Jan 16, 2012 at 6:55 PM #1 http://www.outsideonline.com/outdoor-gear/bikes-and-biking/mountain-bikes/Mukluk-3.html thinking a mukluk 3 might work well on sand
jerry Jan 16, 2012 at 6:57 PM #2 https://www.google.com/search?q=sandman+fat+tire+bike&hl=en&safe=off&prmd=imvns&tbm=isch&tbo=u&source=univ&sa=X&ei=PNUUT_zJNMqsiQKT_ZTeDQ&ved=0CFIQsAQ&biw=1440&bih=809 lots of guys working on this!